Engine.



A. E. GUMPRECHI.

ENGINE.

APPLICATION FILED APR. 9. 1911.

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1,276,056. Patented Aug.20,1918.'

awueu km HRTHUK E-GOMPRECHT A. E. GUMPRECHT. ENGINE.

APPLICATIONFILED APR. 9. I9|1.

1,276,056. Patented Aug. 20, 1918, 3 SHEETS-SHEET 21 11 m 7; T 2 k v p 10? W: M i

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' ENGINE.

APPLICATION H LEU APR.9| 19H.

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HKTHUK E Gum PRECHT ARTHUR E. GUMPEECHT, OF S TEAMBOAT SPRINGS, COLORADO.

ENGINE.

Specification of Letters Patent. I Patented Aug. 20, 1918.

Application filed April 9, 1917. Serial No. 166.766.

To all whom it may concern:

Be it known that I, ARTHUR E. GUM- rnaorrr, a citizen of the United States, residing. at Steamboat S rings, in the-county of Routt and State 0? Colorado, have invented certain new and useful Improve mehts in Engines, 0 which the following is a speciiication, reference being had to the accompanying drawings.

This invention relates to certain improvements in engines and hasrelation more par ticularly to a device of this general char acter embodying roturyabutments or pistons; and it is an object of the invention to rovide novel and improved means whereby eakage between the pistons or abutments and the. coacting walls of the casing is substantiallv entirely eliminated.

It is also an object of the invention to provide an engine of a novel and improved construction wherein the exhaust may be employed for braking the same. I

A further object of the invention is to rovide a novel and improved engine of an mternal combustion type wherein the pis ton has unresisted rotary movement with a minimum of friction and without back pres sure. created by compression.

A still further object of the invention is'to provide a noveland in'iproved engine of an internal combustion type including a rotary piston together with means whereby the charge may be compressed.

A still further ob ect of the invention is to provide a novel and improve engine including two rotatable pistons and wherein. the supporting shaft for one of the pistons is provided with yieldable bearings to compensate for the expansion of the metal of which the stator or casing niay'be groduoed' The invention consists in the etails' of construgion and in the combination and er- "proved .vvieemore umvenient ah t of the several parts of any-inn engine whereby certain important and thedevice is nsive and other advantageous for ll as will be hereinafter more fully rangem advantages,- are attained set rm-n1.

The novel features of the invention will hereinafter be definitelyclaimed; In order that my invention me be thebet ter understood, I will now procee to describe. the same ing drawings, wherein Figure 1 in view in elevation with apart tion; I

g. 2 1s a new in elevation of the engine Fi as disclosed in Fig. 1 with a sideplate removed and the shafts of the rotor in section;

Fig. 3 is a view partly in top plan and partly in section of the engine as set forth in the preceding fighres;

Fig. 4: isa fragmentary sectional view taken through. one of the pistons as herein embodied Fig. 5 is a fragmentary view taken through one of the pistons on a line at right angles to that of Fig. 4;

ig. 6 is a view in top plan of a plate enacting with a wing of a piston as herein disclosed; i

Fig. 7 is an enlarged fragmentary sec-- trolling means for the fuel;

with reference to the accompany- Fig. 8 is a diagrammatic view illustrating an lgniting system as herein embodied;

- Fig. 9 is an clevutional view illustrating r' an engine constructed in accordance with 0. further embodiment of my love Ition;

Fig. 10 is an enlarged fra-gmen ary vet-ti cal sectional view taken through" .he upper portion of the engine as disclosed in Fig. 9.;

Fig. 11 is a. sectional view taken substantially on the line 11 -11 of Fig.. 9;

Fig. 12 is a sectional viewltanen substan tially on the'line 12-12 of Fig; 9; and

Fig. 13 is a rear elevational view oi the camcoacting with the operating lever for the slide valve of the compression chamber as herein set forth. 1 p

. As disclosed in the accompanying drawings, C' denotes a casing provided'with two substantially cylindrical chambers A andB havin communication one with the other, and '1sposed transversely of the casing at the longitudinal center of each of the chambers A and Bis a shaft 1 supported by the bearings 2 and 3 carried by the side plates 4 and 5, respectively, of the casing. Th-e bearings 3 are capable of limited longitude nal movement, said movement being under control of t expansible members 6 tioned at opp site sides of each of the bearings 3. By this arrangementit will beat once self-evident that compensation will be afforded for. e expansion or contraction of the metal of which the casing C may be com-- posed or more particularly the side plate- 5.

The portions of the shafts 1 adjacent the hearin s 2 are operati vely connected one with the other through the medium of the meshing gears 7 whereby it will he at once perceived that the shafts 1 will rotate in unison but in reverse directions. It is also to be noted that the gears 7 are of equal ratio so that the axial speed of the shafts 1 will be identical.

Keyed to each of the shafts 1 is a piston P substantially cylindrical in form and of a diameter materially less than the mean diameter of the chamber A or B in 'which'it may be positioned, and the periphery of said piston is provided with a transversely dis-- entirely.

posed recess-or pocket 8 extendin thereacross and one of the side we 5 ofsaid recess is defined by the radially disposed wing or abutment 9.. Each'side of the iston '1 intermediate the recess 8 and the wing or abutment 9 has reacting with its periph eral marginal portion the packing members 10. Each of these members 10 are substantially L-shaped in crosssection so as to partially overliethe adjacent marginal portion of the side face of the piston P.

Coat-ting with the member 10 are the expansible members 11 which serve to constantly urge the member 10 toward the adjacent side plate of the easing (I so that leakage is prevented. it is also to be noted that'cach of the members 10 extends inwardly and substantially radial at the ends of the side wall of. the recess'i; opposite to the wall thereof defined b the wing or abutment 9.

Each side of the piston l is also. provided with an-a nnular rot-ass 12 concentr c to the shaft1 and-in which is positioned the packing ring 14 also constantly urged towardthe adjacent side plate of the casing (T by duecd in the outer fa e of the wing or abutment 9. The ribs 17 are positionedadjacent the opposite longitudinal margins of the plate 16. .\t substantially its transverse center the plate '16 is provided with the flange 1!) SllbwltllillHllX-T-nlHIPP in cross section and positioned.within a correspondingly formed groove or hannel QQprt-uluttfll in the v stem 33. whiouter end of the abutnu-nt. or wing 9. V

The groove or channel 20 is of a length In excess (if-the width of the flange 19 so that.

the plate .16 will have limited independent movement so that the same will be effectively engaged with' the peripheral wall of the.

chamber A'or B by centrifugalforcc as the piston rotates. 7

Each side of-t'he wing or abutment -9 is provided with a radial groove or channel 2] extending inwardly of the adjacent side of. the piston P and in communication with the the ram 39 has its high point a so as to assure the u'nseating or opening of the annular recess 12 hereinbefore "eferrod The ring 14 stated within the recess is provided with teeth extending within the inner end portion of said channel or reeess'2l.

In mesh with the teeth 22 are the teeth 23 carried by the packing plate 24 while the opposite end of said plate 24- is interlocked with the adjacent. end of the flange 19 here inbefore referred to. adapted to be maintained in constant con tact with the adjacent side plate of the cas- The plate 24 is also ing C through the medium of the expanaible parallelism with the side plate The inner end portion of the pipe 30 at a predetermined distance outwardly of the port 26 is provided with the valve seat 31 with which coacts the valve 32 which is 'normall urged toward the seat- 31 through the DIN ium of the expansibhmember 33 herein disclosed as a coil spring (-nrirclin the outer and portion of the stem 35 of the valve 32 and interposed between the pipe 30 and the enlargement or head 31' carried by the outer endof the stem 35.

in the operation of the engine as herein embodied the abutments or wings 9 after passing the intake port 26 serve to draw a rharge through said port. In. order to assure the proper entrance of the gas without the creation of a slight vacuum I have found it of importance to provide means for positively unseating or o eni'ng the valve 32.

As herein embodied. V cm loy the arm 37 pivotally mounted interm diate its' length with the outer end of the'ppst 3.8 carried by the side plate 5. l

The arm 37 is substantia ly aigmoidal form and one terminal of in, 0; arm 37 overlies and engapea the outer end portion of the he oppositdend of the arm 37 is in contact with'the cam 39 carried by the adjacent end' portion of oneof the shafts 1. It is to be understoodth'at' valve at the propertime an tomaintain' the same unseated or opened for the requisite period, I it is to he understood that the positioned v charge i'lelivrred within therasing C is only of atmosphericpressure .iV denotes-a vertirjrally disposed well carried 'by the plate 5 having its upper end open'and having arraigged therein a nipple .40 having its-loweren j'terminating in close proximity to the lower or closed end of the well and 'having its upper or-opposite end extending within the pipe 30. Dis osed through the ipe and coac'ting wit the 'dischar en of the nipple 40 is the needle valve '4 whereby. the quantity of fuel deliveredwithin the pipe 30 maybe readily and conveniently Regulated.

In mdmi'uuriication with the well W i through the'bottom thereof is the pipe 42 leading from'a suitable source of fuel sup-.

ply, preferablg'gasoline, and interposed in said pipe is -t pump 43 including the re ciprocatin shaft 1 whereby it will be perceived that durin the operationof the engine, fuel will be de ivered within llW. Also in communication withfl 1 "well W througha sidethereofis the on E l. 1.11, pipe 46 whereby a pradeterminpd level oft-he fuel within the well; amine The pipeifi serves to the o rflow'to the source of fuel supply; v ntommuni'cationwith'the rt 27 is the a willtg use the moverrihntdf the pistons within the casing O will retarded and'brou t to a standstill.

-The valve 48 may be' p and B 'throu In. practice. Lhavejjoun it of particular advantage to provide this means for causing the exhaust to serve as a braking medium.

rated -m any desired manner as the requirements of'practioe ma dictate. "'40- the. form of invention illustrated in Figs.'9 to 13, I disclose an embodiment t-- my invention wherein charge is compressed. In thisemhodiment of my invention the'casinf- C' andfth'e pistons P are i which isf-engaged the lever 56 coacting' with the cam. 69. As'herein embodied, the cam 57 is driven by 'one, of the'shafts 1 at a ratio of 3 an; a o

In communication with one of the chambers A 'or B is an air intake port 58 and in commimication with the second of said piston 44 operatively. engaged as at 45,' Wlth the adjacent end of the in said pipe 7 chambers A or B is the gas intake 59. Coacting with the intake 59 is the valve 60 having coacting therewith a spring 61 of suflicient strength to create a vacuum sons to prevent the volume of gas being too great iorone explosion.

It is to be understood that the charge of gas is drawn in through the intake 59 at the first. revolution of the pistons P.

Coacting with the intake port 58 is the valve-62 with which coacts the s ring 63 of a resistance greater than that o the spring 61 so that the valve 62 will not open on the firstv revolution of the pistons P. The valve 62 is adapted to be positively opened upon the second revolution of the pistons P through the medium of the cam 57 in a, manner substantiallythe same as has been setlforth relative to the positive operation ofthe intake: valve 32.

In communication with one of the chain:

bars, as A, is a rt- 64 in communication with n; chamber 49 through the medium'o the'pipe 65. Coactin with the-port the spring-pressed va ve 66 adapted to be positively opened under the inflmceofdhe cam-57 in substantially the samemannerf-as thevalt'e 62. The valve 66 is adapted tofbe opened when the istons are on their'second that t gas and air admitted through the ports 58 and '59 will be compressed and forced" up into the compression chamber 49.". Upon the next revolution of the pistons P" the slide valve 51 willbe adjusted into open position and the mixture enter within the chambers 'A' and B intermediate the wings or abutments 9! through the ports 50.

As herein embodied, the chamberA adacent the port 64 is' providedwith the exaust port 67 with which counts the springpressed valve 68. The exhaust port 67 is .ada ted to be opened after the revolutions of t e pistons P immediately following the explosion and the valve 68 is also positlvely opened or unseated through the medium of the cam 69 driven by the shaft 1 dispqsedl through the chamber A and in a manner as has been similarly set forth relative tp the .r'emlainin valves. The valve 60 -is also! spring-pssed and is adapted to be 'positlvely o 57 refer d to.

In Fi 8 I disclose an igniting system for thee bodiment of the invention as dis closed in Figs; 1 to 7 inclusive, and where in the plug 29 is electricallyoonnected in a cpn venti'onalgmanner ith thq-souree Eflof electrical enei'gy'and hertiil.is.interjiosed y a circuit closer com a co'ntact'a carried bya shaft 1 .wluch is adapted-to engage upon each revolution of the shaft 1 the second contact 6 The i itin system .for the spark plug 29" inem odiment ofmy invention a nod underthe influence of the cam disclosed in Figs. 9 to 13 inclusive is substantially the same as has been set forth relative to the first embodiment ofmy inven tion except the movable contact will be carried by a cam 57 or 69 so that the circuit will be closed upon every third revolution of a shaft 1.

From the foregoing description, it is thought to be obvious that an engine constructed in acwrdance with my invention is of an extremely simple and com arativel inexpensive nature and is particu arly wel adapted for use by reason of the convenience and facility with which it may be assembled, and it will also be obvious that my iIlv vention is susceptible of some change an modification without material departure from the principles and spirit thereof and for this reason I do not wish to be understood as limiting myself to the precise arrange,

ment and formation of the several parts herein" shown in carrying out my invention in practice, except as hereinafter claimed.

I claim: V

l. A device of the character described comprising a casing, a compression chamber in communication therewith,a valve for controlling the communication between the casingand the compression chamber, a conduit in communication with the casing and the compression chamber, a piston within the casing, a valve interposed within the conduit, said casing being provided with an air intake, a gas intake and an exhaust,

valves coacting with said gas intake, air in-:

take and'exhaust, and means forlintermittently o ening said valves.

2. A evice of the character described comprising a casing, a compression chamber in communication therewith, a valve for controlling the communication between the casing and the compression chamber, a'conduit in communication with the casing and the compression chamber, a piston. within the casing, a valve interposed within the conduit, said casing being provided with an air intake, a gas intake and an exhaust, valves coacting with said gas intake, air intake and exhaust, and means for intermittently openin said valves, said-means serving to intermittently operate the valve controlling the communication between the compression chamber and the casing.

7' 3. A device of the character described comprising a casing, a compression chamber in communication therewith, a valve for controlling the communication between the cats prising a casing provided with an inlet port in a side wall, said port being provided in a wall exterior of the casing with an elongated and substantially horizontally dis.- posed recess, an inwardly opening valve coacting with the inlet port and positioned in advance of therecess' in the port, apiston moving within the casing and operating to draw a charge within the casing through the inlet port, and'a spark plug extending within the inner end portion of the recess.

In testimony whereof'I hereunto ailixmy signature in the presence of two witnesses.

ARTHUR 1g. GUMPRECHTQ Witnesses:

RODOLPHUB M. SMITH, Joan H. PARKER.- 

